1.

If kbara = 3barb+2barc, bara=-2barb+5barc " and if " barb and barc have opposite direction, then

Answer»

`K in (-3/2,2/5)`
`KIN(-3/2,1/5)`
`k in (-1/2,2/3)`
`k in (-2/3,1/4)`

ANSWER :A


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